New update (14.4.A.0.137) certified for Xperia Z1s on T-Mobile

A new firmware update for the Sony Xperia Z1s for T-Mobile has been certified by the PTCRB. Firmware build 14.4.A.0.137 has been certified, this compared to Android 4.4.4 build number 14.4.B.0.37 that started to roll in early August. At this stage, there’s no guarantee that this update will hit the Xperia Z1s, but we’ll keep you posted if we see any signs of it.

Will this have a battery fix? I have factory reset my phone twice starting from scratch. My battery life with kit kat compared to jelly bean has a noticeable difference.

bao trung giang

First the z1s and then the z1!!! I really hope s?!

Wolf0491

I would assume it has same changelog basically as regular Z. So possible

Robert Terry

Odd…my battery has been better since the Kit Kat update. Not counting on us getting this, I mean look how many were certified before…but if we do, cool. Just wondering what it would actually change. I’m loving the 4.4.4 update so far.

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